open

verb

Compounds

In compounds

open one's eyes

Forms

simple present : open
simple present, singular, third person : opens
simple past : opened
present participle : opening
past participle : opened

Senses

move something, e.g. a door, to allow things to pass through it
(cause to) become open; change of state, free for passage/entry
begin

open

adjective

Related

Derivations op

Compounds

In compounds

compact open topology

compact-open topology

Forms

positive : open
comparative : opener
superlative : openest

Senses

(of a sports competition) enterable by amateurs and professionals
available to the public
ajar (window, door, etc.)
freely giving of info, feelings, free to be seen
open-minded, freely accepting of input
free for passage, entry, or utilization (e.g. the roads are open to traffic, the door is open to them, the store is open for business)
spacious, unenclosed
vulnerable/subject to, exposed

open

noun

Forms

singular : open
plural : opens

Senses